Liquibase is an open source (Apache 2.0 Licensed), database-independent library for tracking, managing and applying database changes. It is built on a simple premise: All database changes are stored in a human readable yet trackable form and checked into source control.

GitStats is a statistics generator for git (a distributed revision control system) repositories. It examines the repository and produces some interesting statistics from the history of it. Currently HTML is the only output format.

SQuirreL SQL Client is a graphical Java program that will allow you to view the structure of a JDBC compliant database, browse the data in tables, issue SQL commands etc, see Getting Started and Introduction. The minimum version of Java supported is 1.6.x as of SQuirreL version 3.0. See the Old Versions page for versions of SQuirreL that will work with older versions of Java.